Improvement in machines for winding sewing-machine bobbins



UNrTaD STATES A. W. TODD, OF CHICAGO, ILLINOIS.

IMPROVEMENT iN MACHINES FOR WINDING SEWING-MACHINE BOBBINS.

Specification forming part of Letters Patent No. 16,95 5. dated March 21, 1865.

To all lwhom it may concern Beit known that I, A. WV. TODD, ofthe city of Chicago, county of Cook, and State of lllinois, have invented a new and useful Machine for Filling Bobbins for Sewing-N'Iachines and other Purposes; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making part of this specification, in which- Figure lis a top and front view. Fig. 2 is a side view. Figs. 3 and 4are detached parts of the same, similar letters denoting like parts in all the iigures.

Referring to Fig. 1, Ais the pedestal. B B B B are posts, upon which the wheels D and E rest. C is the cam, having connected inclined grooves in it,as shown.and which move to and fro the horizontal rod Y, which distributes the thread from end to end of the bobbin P, a standard, upon which the rod Yis pivoted. F is a staff for spool of thread. M is a pinion, which moves the wheel E, cam C, and rod Y. O is the crank for giving motion to all the parts. H is a spiral spring, which keeps the frame that carries the bobbin -driving shaft and graduated cone-pulley up against the driving-wheel. II are two posts, on which the shaft 6 rests, which shaft has on it the graduated conepulley 4, which has twenty-one different-sized grooves to suit the different-sized threads, as occasion requires. (Seen best in Fig. 3.) The cone pulley is allowed to slide freely upon the shaft when theframethatholds the shaft against the driving-wheel is inclined far enough from said driving-wheel to allow it thus to move. The frame, being held bythe spiral spring II, is inclined away from the driving-wheel by overcoming the resistance of said spiral spring. The conepulley is prevented from revolving on the shaft by means of a pin, which passes through its side and into a groove in the shalt. One end of the'bobbin l rests in the hollow cup-shaped piece 2. The other end turns in a bearing in the spring J, which presses the other end of the bobbin into the cup-shaped piece 2 with sufficient force, so that the friction produced between them will be suicient to rotate the bobbin. This spring J is adjusted by means of a slot and thumb-screw, as seen at S, so as to produce more or less pressure on the bobbin, and for moving it to suit the different lengths of bobbins. The posts I I are mortised into a sill, G, which sill is fastened topede'stal A by means of a long hinge, as seen at?) 3 3, thus allowing the posts I I, which carry the bobbin-driving shaft, to be turned away from the drivingwheel so as to shift the cone. The spiral springH, attached to the frame, keeps the cone 4 in close contact with the driving wheel D, whereby the cone is run at different speeds, according to the groove in which the wheel is placed. Thus the hea-d 2 is made to rotate the bobbin with different velocities to suit different-sized threads, and the thread is laid by the rod Y in an even manner upon the bobbin l. To give tension to the thread it may be wound around the rod Y once or twice, or the spool of thread N may be weighted, so as to answer the same purpose. The rod Y is provided with a series ot holes, (see Fig. 1,) so that its fulcrumon the standard P may be moved so as to give the eye of said rod Ygreater orless range of motion, according to the lengths of bobbins to be lilled.

.It is a plate at the back end of rod Y, provided with a slot to keep the said rod in a horizontal position as it is moved back and forth bythe cam C, which cam is a littler concave on its face, so as to conform to the arc of the circle described by the end of rod Y, and so as to have the groove in it which operates the rod Y of uniform depth; and this rod may be run back and forth so long as there is any inclination in the grooves. Thus the rod Y, by reason of the acute angle wherethe grooves join each other, is made to make quick turns at the end of its journeys back and forth.

In Fig. 2 is shown a rod, 7, with an eye at the top of it to guide the thread from the spool N into a disk-bobbin, K, which is stuck on the end of a wooden shaft, l, made for the purpose. (See Fig. 4.) This shaft has aspring similar to those used on the staff of an'umbrella. The spool S is slipped over this shaft and spring, and is prevented from revolving by the outward pressure of s'aid spring, by which means thread may be wound from another spool or bobbin onto it, if desired. (The spool S is indicated by the dotted lilies, Fig. 4.) The pinion M is provided with a pin, d, which enters a groove in shaft 9, so that it may be moved laterally and out of gear with the wheel E for the purpose of stopping the motion of the rod Y while Winding` the spool S or the filata I claim, and desire to secure by Letdisk-bobbin K. The. pinion M is kept in its ters Patent., is place, whether turned beck o rforwerd, byniak- The combination and arrangement of all the ing u short groove across or at right angles to parts of the lnaehine, as and for the purpose the end of groove 9 next lche wheel D, to redescribed. oeive the point d. The force exerted upon the pinion throws the pin out of the main groove A. XV. TODD. into this short groove. y

The machine is expected to be screwed Witnesses: down to sonne. suitable place. JAIRUS STANFORD,

I am aware that there have been many plans Gr. V. STANFORD. for filling Dobbins; but 

